COMPARATIVE-STUDY OF MICROFIELD NONUNIFORMITY IN PLASMAS

Recent general theoretical approaches to the problem of the microfield nonuniformity in plasmas are summarized in the context of their appli cations to the emission or absorption shape of the spectral lines aris ing from atoms immersed in a plasma. The calculations of the microfiel d distribution function and the universal functions, which define the constraint moments of the components of the nonuniformity microfield t enser, are performed for various plasma conditions. The results obtain ed on the basis of the generalized Baranger-Mozer cluster expansion sc heme, the generalized Adjustable Parameter Exponential Approximation a nd Monte Carlo simulations are compared. This study provides the groun dwork for improved calculations of the line profile that account for p lasma microfield nonuniformity.